Toyotomi CCT70A-M Service Manual
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Toyotomi CCT70A-M Service Manual

Toyotomi CCT70A-M Service Manual

Four-way cassette type
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MODEL:
CCT70A-M
CCT140A-M

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Summary of Contents for Toyotomi CCT70A-M

  • Page 1 MODEL: CCT70A-M CCT140A-M...

  • Page 2: Table Of Contents

    Four-way Cassette Type Four-way Cassette Type 1. Features ...................... 2. Dimensions ....................3. Service Space ..................... 4. Wiring Diagrams ..................5. Air Velocity and Temperature Distributions(Reference Data) ....6. Electric Characteristics ................7. Sound Levels ....................8. Accessories ....................9. The Specification of Power ................ 10.
  • Page 3 Features 1. Features 1.1 New panel (60k standard) New panel with 360° airflow supply Ø Air intake grille lift function for supper thin cassette, convenient for maintenance. Ø 1.2 3D screw fan technology 3D screw indoor fan technology reduces the air resistance, increases the air volume and improves the Ø...
  • Page 4 Features 1.4 Drainage pump Build-in water pump which pumping head is 750mm upmost. It’s convenient to install drainage piping Ø under most space condition. 1.5 LED display Digital LED interface, makes the unit more elegant. Ø Normally display the setting temperature Ø...
  • Page 5 Dimensions 2. Dimensions CCT70A-M 4-install hanger Gas side Liquid side E-parts box Pump inspect hole Drain hole C C T 1 4 0 A - M 4-install hanger Gas side Liquid side E-parts box Pump inspect hole Drain hole Four-way Cassette Type...

  • Page 6: Service Space

    Service Space 3. Service Space The indoor unit should be installed in a location that meets the following requirements: ● There is enough room for installation and maintenance. ● The ceiling is horizontal, and its structure can endure the weight of the indoor unit. ●...

  • Page 7: Wiring Diagrams

    Wiring Diagrams Wiring Diagrams C C T 7 0 A - M Four-way Cassette Type...
  • Page 8 Wiring Diagrams CCT140A-M Four-way Cassette Type...

  • Page 9: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions(Reference Data) 5. Air Velocity and Temperature Distributions(Reference Data) Airflow velocity Temperature Four-way Cassette Type...

  • Page 10: Electric Characteristics

    Electric Characteristics 6. Electric Characteristics Indoor Units Power Supply Model Voltage Min. Max. CCT70A-M 220-240V 198V 254V CCT140A-M 380-415V 342V 418V Remark: MFA: Max. Fuse Amps. (A) 7. Sound Levels FOUR-WAY CASSETTE TYPE 1.0m Microphone Noise level dB(A) Model CCT70A-M...
  • Page 11 Accessories 8. Accessories Name Shape Quantity 1. Expansible hook Installation Fittings 2. Installation hook 3. Installation paper board 4. Bolt M5 5. Connecting pipe group 6. Binding tape Tubing & Fittings 7.Soundproof/insulation sheath 8. Out-let pipe sheath 9. Out-let pipe clasp Drainpipe Fittings 10.

  • Page 12: The Specification Of Power

    The Specification of Power 9. The Specification of Power Cooling & heating 48000 Type 24000 Btu/h Btu/h Phase 1-phase 3-phase Power Frequency 220-240V, 50Hz 380-415V, 50Hz Voltage Circuit Breaker/ Fuse (A) 40/25 25/15 Indoor Unit Power Wiring (mm 3×2.5 5×2.5 Ground Wiring Outdoor Unit...

  • Page 13: Field Wiring

    Field Wiring 10. Field Wiring Wiring chart MCC-24HRN1 Four-way Cassette Type...
  • Page 14 Field Wiring CCT140A-M Four-way Cassette Type...
  • Page 15 Outdoor Units Part 3 Outdoor Units 1. Dimensions ....................2. Service Space ..................... 3. Piping Diagrams ..................4. Wiring Diagrams ..................5. Electric Characteristics ................6. Operation Limits ..................7. Sound Levels ....................Outdoor Units...

  • Page 16: Outdoor Units

    Dimensions 1. Dimensions Model CCT70A-M 335 360 Outdoor Units...
  • Page 17 Dimensions Model CCT140A-M 1167 Outdoor Units...
  • Page 18 Service Space 2. Service Space (Wall or obstacle) More than 30cm Air inlet More than 60cm More than 30cm Maintain channel Air inlet More than 60cm Air outlet More than 200cm Outdoor Units...

  • Page 19: Piping Diagrams

    2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) T1 Room temp. sensor T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE ACCUMULATOR COOLING COMPRESSOR HEATING For CCT70A-M, the accumulator is not included. Outdoor Units...
  • Page 20 Piping Diagrams INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) T1 Room temp. T4 Ambient sensor temp. sensor T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE ACCUMULATOR COOLING...
  • Page 21 Wiring Diagrams CCT70A-M Outdoor Units...
  • Page 22 Wiring Diagrams CCT140A-M Outdoor Units...
  • Page 23 Electric Characteristics 5. Electric Characteristics Outdoor Unit Model Voltage Min. Max. CCT70A-M 220-240V 208V 253V CCT140A-M 380~420V 342V 440V Outdoor Units...

  • Page 24: Operation Limits

    Operation Limits 6. Operation Limits Temperature Cooling operation Heating operation Mode Room temperature 17℃～32℃ 0℃～30℃ 18℃～43℃ （-7℃～43℃：For the Outdoor temperature -7℃～24℃ models with low temperature cooling system） Cooling Heating With Low Ambient Cooling System Indoor temperature( ℃ WB) Indoor temperature( ℃ WB) Outdoor Units...
  • Page 25 Sound Levels 7. Sound Levels 24000Btu/h-48000Btu/h Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Note: The point A is in the middle of the whole outdoor panel. Model Noise level dB(A) C C T 7 0 A - M C C T 1 4 0 A - M Outdoor Units...
  • Page 26 Control Electrical Part 5 Electrical Control System 1. Electrical Control Function ................ 2. Troubleshooting ..................3. Controller ....................Control Electrical...

  • Page 27: Main Protection

    Electrical Control Function Electrical Control Function 1.1 Definition T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 1.2 Main Protection 1.2.1 Time Delay at restart for compressor. 1.2.2 Sensor protection at open circuit and breaking disconnection.

  • Page 28: Operation Modes And Functions

    Electrical Control Function 1.3 Operation Modes and Functions 1.3.1 Fan mode ( 1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/(med)/low/auto. (4) The louver operates same as in cooling mode. (5) Auto fan: Big Cassette High...
  • Page 29 Electrical Control Function T1-TS 4°C High 1°C Compact cassette: T1-TS 3°C High 1°C 1.3.2.3 Low evaporator coil temperature T2 protection When the evaporator coil temp.T2 keeps lower than TE5 for 3 minutes, the compressor and outdoor fan will shut off. When T2 is higher than TE6, the compressor and outdoor fan will restart up. 1.3.2.4 Condenser high temperature T3 protection TE12 TE13...
  • Page 30 Electrical Control Function 1.3.3 Heating Mode(For heat pump models) 1.3.3.1 Outdoor fan running rules: For 1-phase outdoor units: The On-off outdoor units have single fan speed. The outdoor fan will run following the compressor except when AC is in evaporator high temp. protection in heating mode ,condenser high temp. protection in cooling mode, defrosting mode and the current protection.
  • Page 31 Electrical Control Function Setting TE14+2℃ TE14 Low for15s, then Auto fan action: For cassette: T1-TS 3°C 1°C High 1.3.3.3 Defrosting mode： For 1-phase outdoor units: Condition of defrosting: AC will enter defrosting mode if any of the following items is satisfied. A: For DL, high static pressure duct &...
  • Page 32 Electrical Control Function Setting defrosting time Compressor 4 way valve Outdoor fan Indoor fan For the others type:: The compressor is running, and 4-way valve and outdoor fan stop. The indoor fan works as anti-cold wind procedure. When defrosting is over, the compressor keeps running and the 4-way valve and outdoor fan will start up.
  • Page 33 Electrical Control Function 1.3.3.4 High evaporator coil temp.T2 protection: For cassette: Compressor off Outdoor fan off Compressor on Outdoor fan off TE10 Compressor on Outdoor fan on TE11 1.3.4 Auto-mode This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃.
  • Page 34 Electrical Control Function For high static pressure duct & cassette: The timer function will change the AC current operation mode. Suppose users set the “timer off” function and AC is off now, the AC will turn on firstly and then turn off when reaching the setting time.

  • Page 35: Troubleshooting

    Troubleshooting Troubleshooting 2.1 Display board 2.1.1 Icon explanation on indoor display board (Big cassette). 2.1.2 Icon explanation on indoor display board (Compact cassett). 2.2. Self-diagnosis Indoor unit’s LED indication (1) For the Big Four-way cassette During malfunction or protection, the indicators and digital LED displays as follow: Operation Timer Def/Fan...
  • Page 36 Troubleshooting Indoor temperature sensor is ☆ abnormal Evaporator temperature sensor is ☆ Recover automatically after abnormal errors are eliminated (For T3 Condenser temperature sensor is malfunction of 5HP, can’t ☆ abnormal recover automatically) ☆ ☆ EEPROM malfunction Full-water malfunction ☆ Note: “○”...
  • Page 37 Troubleshooting LEDs’ for the indication of outdoor trouble Type Contents LED1 LED2 LED3 Trouble Phase sequence Flash Trouble Lack of phase(A,B) Flash Trouble Lack of phase(C) Trouble Protection of Low pressure Flash Flash Trouble Overload of current Flash Trouble Communication malfunction Flash Flash Trouble...
  • Page 38 Troubleshooting 2.3. Solving steps for typical malfunction (1) For indoor unit a. Indoor room temperature T1 and sensor evaporator temperature sensor T2 is abnormal Is connection to connector of temp. sensor good? Repair connector Check the resistance of the temp. sensor according to Appendix 1 Is it the resistance is normal? Indoor PCB is defective.
  • Page 39 Troubleshooting c. EEPROM malfunction EEPROM malfunction EEPROM chip is broken Replace EEPROM Replace the control chip Check whether the main control chip is broken Check PCB board or replace the main control board f. Full-water malfunction Full-water malfunction Check whether the water-level switch is inserted well Insert the water-level switch well Check whether the water-level switch is broken Replace the water-level switch...
  • Page 40 Troubleshooting (2) For the outdoor unit a. Phase sequence error: Phase sequence error Change the order of two of the wires to power supply. Switch on the unit again. If the problem cannot be solved, the outdoor PCB is defective b.
  • Page 41 Troubleshooting d. Protection of pressure or temp. Protection of pressure or temp. Is it k1 or K2 open ? Is temp. protective switch K1 open Is pressure protective switch K2 open Possible reason Possible reason 1. The wires is loose to K1 1.
  • Page 42 Troubleshooting f. Open-circuit and short-circuit trouble of T4 Is connection to connector of temp. sensor good? Repair connector Check the resistance of the temp. sensor according to Appendix 1 Is it the resistance is normal? Replace the sensor Indoor PCB is defective. g.
  • Page 43 Troubleshooting Appendix 1 Temperature Sensor Resistance Value Table (℃--K) K Ohm K Ohm K Ohm K Ohm ℃ ℃ ℃ ℃ 12.6431 2.35774 0.62973 115.266 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190 10.000...

  • Page 44: Wireless Remote Controller

    Controller Controller 3.1 Wireless Remote Controller 3.1.1 R05/BGE AUTO TE MP C O O L Mo de setting Fan s peed se tti n g H E AT F AN Adjus t Ad jus t MOD E S P EED Ai r dire ct i on setting ON/OFF Tim e settin g...
  • Page 45 Controller Buttons and functions 1. MODE: Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT NOTE: No heating mode for cool only type unit. 2. FAN SPEED: Fan speed will be selected in following sequence once pressing this button: AUTO HIGH 3.
  • Page 46 Controller 3.1.2 RG51Q1/BGE The R51Q1/BGE wireless remote controller is standard for Four-way cassette type and the Ceiling& floor type. General Function for wireless remote controller: Model RG51Q1/BGE Rated voltage 3.0V(2pieces of LR03 7＃ batteries) Min voltage for sending signal of CPU 2.4V Effective receiving distance 8m~11m...
  • Page 47 Controller Buttons and functions 1. Adjust : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 2. Adjust : Increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 3. MODE: Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT...

  • Page 48: Wired Remote Controller

    Controller 3.2 Wired Remote Controller KJR-10B Name and functions of buttons on the wire controller mode selection button: It is used to select mode, push the button one time, then the operation modes will change In turn as follows: AUTO COOL HEAT Remark: no heating mode if wire controller is set as the cool only.
  • Page 49 Controller Name and function of LCD on the wire controller Mode select button (MODE): Press MODE button to select “COOL”, “DRY” , "HEAT", or "FAN ONLY" mode.(HEAT is invalid for COOL ONLY wire controller.) AUTO COOL HEAT Fan speed button (FAN SPEED) Press FAN SPEED to select fan speed from "AUTO", "LOW","...
  • Page 50 Controller Installation Installation Notice: When the air conditioner needs the constant frequency wire Controller, be sure adding a Wire Joint with 5 terminal named A, B, C, D, E in indoor unit, and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board, then connecting the terminal +5v, GND, Run in the Switch Board to C,D,E respectively.

This manual is also suitable for:

Cct140a-m

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